generated: '2026-07-21'
method: searched
source: >-
  npm, PyPI, Maven Central and the stepfun-ai GitHub org searched 2026-07-21.
  StepFun ships no first-party packages on the public registries — the
  quickstart officially instructs reusing the OpenAI SDK (and the Anthropic
  SDK for /v1/messages) against api.stepfun.com. First-party client code is
  distributed from the stepfun-ai GitHub org.
packages:
  - language: kotlin
    registry: github
    name: stepfunApi-audio-sdk
    url: https://github.com/stepfun-ai/stepfunApi-audio-sdk
    install: 'clone https://github.com/stepfun-ai/stepfunApi-audio-sdk (not published to Maven Central)'
    official: true
    description: >-
      Android voice SDK built on the StepFun open-platform audio APIs —
      streaming and non-streaming TTS, ASR (streaming and non-streaming),
      audio player, and voice recording.
  - language: typescript
    registry: github
    name: Step-Realtime-CLI
    url: https://github.com/stepfun-ai/Step-Realtime-CLI
    install: 'clone https://github.com/stepfun-ai/Step-Realtime-CLI (not published to npm)'
    official: true
    description: First-party CLI client for the StepFun realtime voice WebSocket API.
  - language: python
    registry: github
    name: Step-Realtime-Python-Demo
    url: https://github.com/stepfun-ai/Step-Realtime-Python-Demo
    install: 'clone https://github.com/stepfun-ai/Step-Realtime-Python-Demo'
    official: true
    description: First-party Python demo client for the StepFun realtime API.
compatible_sdks:
  - name: openai (PyPI/npm)
    notes: 'Officially documented: OpenAI SDK with base_url https://api.stepfun.com/v1.'
  - name: anthropic (PyPI/npm)
    notes: 'Officially documented: Anthropic SDK with base_url https://api.stepfun.com for /v1/messages.'
not_first_party:
  - '@stepfun-ai/cli on npm is a personal project (github.com/janssenkm/stepfun-cli), not published by StepFun.'
  - 'stepfun-mcp, stepfun-cli, stepfun-status on npm are community packages.'